The department of ecology withdraws the following CR-101 preproposal statement of inquiry: Chapter 173-400 WAC, General regulation for air pollution sources and chapter 173-406 WAC, Acid rain regulation/electric generating unit rule, WSR 07-07-128, filed on March 21, 2007.

     The department of ecology does not currently plan to file another CR-101 that references requirements for mercury emissions from coal-fired power plants into chapter 173-406 WAC, WAC 173-400-112 and 173-400-113.

     However, the department of ecology is still developing changes to chapter 173-400 WAC, General regulation for air pollution sources for WSR 10-15-077 filed on July 19, 2010. This rule making has three focal points:

•	Development of nonattainment area new source review (NSR) rules.
•	Correcting state implementation plan deficiencies.
•	General housekeeping issues.

     You can find more information regarding the ongoing rule making at http://www.ecy.wa.gov/laws-rules/wac173400/0901.html.

Stuart A. Clark

Air Quality Program Manager

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